Rotary engine.



No. 708,742. Patented Sept.- 9, I902.

a. SPEICE.

ROTARY ENGINE. m u'mion fll ed am, 20, 10m. (No Model.) 2 Sl| ee1She0t '2.

I Wifcgesses.

UNITED STATE PATENT OFFICE. A

GEORGE SPEIOE, OF PARAGOULD, ARKANSAS, ASSIGNOR OF ONE-HALF TO CHARLES LOESOHE AND HERMANN E. STEINHEIMER, OF PARAGOULD,

ARKANSAS.

ROTARY ENGINE.

SPECIFICATION forming part of Letters Patent No. 708,742, dated September 9,1902. Application filed March 20,1901. Serial No. 52,064. (No model.)

To all whom it may concern: Referring to the lettered parts of the draw- Be it known that LGEORGE SPEIOE,a citizen ing, A is a suitable base, preferably of hollow of the United States, residing at the city of cast metal. On the top of this is formed a 'Paragould, in the county of Greene and State suitable saddle which receives the cylinder of Arkansas, have invented certain new and B of the engine, which is secured in position useful Improvements in Rotary Engines,-of bysuitable bolts or other means. The steam- Which the following is a specification. v space is formed in the upper portion of the This invention relates to improvements in cylinder and contains the revolving head 0, jrotary engines. which is eccentric thereto and issecured to IO The objects of the invention are, first, to the shaft 0 O, which extends through suitsimplify the construction by reducing the able stuffing-boxes on each side of the cylnumber of movable parts; second, to provide inder, which stuffing-hoxes also serve as in a rotary engine movable parts which vary bearings for the shaft. The driving-pulley their position only gradually, and therefore H is on one end of the shaft, and the balance- 15 avoid any sudden strains; third, to provide a wheel G is on the opposite end. Supports rotary engine which is easy to pack and to or brackets A A with hearings in their upkeep steam tight; fourth, to provide in a per ends areprovided for the shaft 0. The rotary engine improved means of controlling bore of the cylinder is not a true circle exthe steam in relation thereto, so that the cept in the lower part of the same, the upper 20 engine can be easily reversed and so, also, part being in form the side of an ellipse. the expansive force of the steam can be Through the center ofthe revolving head 0 utilized; fifth, to provide an improved rotary is a piston C, which is adapted to reciprovalve for use in rotary engines whereby the cate through a suitable recess in the head. steam can be perfectly controlled and the This is provided with suitable packings I at 25 engine easily reversed. its outer ends and is packed by. suitable Further objects will definitely appear in means, (notshown,) thepackiugslbeing held the detailed description to follow. in position by suitable springs I. With I accomplish the objects of my invention, this peculiar form of cylinder when the by the devices and means described in this head 0 revolves the piston C will exactly 30 specification. fill the space in all positions and will recip- The invention is clearly defined and poiut-, rocate only slightly through the head to keep ed out in the claims. it in position.

Astructure fully embodying myinvention I supplyports or passages for the steam is clearly illustrated in the accompanying. n n to each side, which are divided into two 3 5 drawings, forminga part of this specification, parts at the bottom where they connect with in which i the valve-vim, n 'n"a portion of the stock Figure 1 is a vertical longitudinal detail S being left between them. The valve E is sectional elevation of my improved engine, provided, having a stem D, bearing a suit- 1 taken on line 1 1 of Fig. 2, the rotating head, able lever D", by which it is operated.

40 valve, and pulleys being in full lines. Fig. D is the inlet-pipe, and the inner end of the 2 is a vertical transverse detail sectional elevalve is provided with a port t, which convation taken on a line corresponding to line nects the steam-pipe D with the passage n at 2 2 of Fig. 1. Fig. 3 is a sectional plan view either side, depending on theposition of the taken on a line corresponding to line 3 3 of valve when one side is connected, the other 5 Fig. 2. side being cut ofi. The opposite end of the 5 In thedrawings all of the sectional views valve is provided with a steam-port which are taken looking in the direction of the little connects with the exhaust-pipe F below, conarrows at the ends of the section-lines, and necting the opposite side or port or passage similar letters of reference refer to similar a" with the exhaust when the opposite end of 7 50 parts throughout the several views. the valve admits steam on the opposite side, roo

so, by shifting the valve, live steam will be delivered to either side of the engine and be exhausted from the opposite side, making the engine completely reversible. Small ports 1; lead from the cylinder to permit the escape of exhaust-steam at the valve, which may be beyond the main port, which of course would tend to retard the engine if no port of escape were provided. The small port through the exhaust-valve connects to deliver this steam into the exhaust.

Having thus described my invention, I desire to state that the revolving piston and particular form of cylinder might be utilized with other styles of valves, though the particular style of valve I have adopted is of especial advantage in the manufacture of the same. Owing to the simplicity and compactness of my engine it is of especial value in small sizes, though it is of great advantage and utility in large sizes. However, a small engine of my design can be run at a high rate of speed, so that great power willbe derived from a comparatively small engine.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a rotary steam-engine, the combina tion of a cylinder; a rotary piston within the same; ports leading to each side of said cylinder to serve alternately as inlets or exhausts,said ports being divided into two separate passages at their outer ends; a valve having two passages, one of which connects one of said ports to the supply-pipe while the other connects the opposite port to the exhaust, alternately as the valve is shifted, coacting for the purpose specified.

2. In a rotary steam-engine, the combination of a cylinder,a cross-section of which is half-circular and half in the form of an ellipse, merging into each other; a rotary head eccentric thereto; a piston adapted to slide radially through the rotary head with suitable packings between it and the cylinder; ports leading to each side to serve alternately as inlets or exhausts, said ports being divided into two passages at their outer ends; avalve having two passages one of which connects one of said-ports to the supply-pipe while the other connects the opposite port to the exhaust alternately as the valve is shifted, eoacting for the purpose specified.

3. In a rotary steam engine, the combination of a cylinder, a cross-section of which is half-circular and half in the form of an ellipse, merging into each other; a rotary head eccentric thereto; a piston adapted to slide radially through the rotary head with suitable packings between it and the cylinder; ports leading to each side to serve alternately as inlets or exhausts, said ports being divided into two passages at their outer ends; a valve having two passages one of which connects one of said ports to the supply-pipe while the other connects the opposite port to the exhaust, alternately as the valve is shifted and an auxiliary exhaust leading into the main exhaust from the exhaust side of the cylinderchamber, coacting for the purpose specified.

In witness whereof I have hereunto set my hand and seal in the presence of two witnesses.

GEORGE SPEIOE. 1,. a]

Witnesses:

WM. POINDEXTER, A. P. Cox. 

